University of Oulu

Hassan, M., Berglund, L., Abou-Zeid, R., Hassan, E., Abou-Elseoud, W., & Oksman, K. (2019). Nanocomposite Film Based on Cellulose Acetate and Lignin-Rich Rice Straw Nanofibers. Materials, 12(4), 595.

Nanocomposite film based on cellulose acetate and lignin-rich rice straw nanofibers

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Author: Hassan, Mohammad1,2; Berglund, Linn3; Abou-Zeid, Ragab1;
Organizations: 1Cellulose and Paper Department & Centre of Excellence for Advanced Sciences, National Research Centre, 33 El-Behouth street, Dokki, Giza 12622, Egypt
2Egypt Nanotechnology Centre, Cairo University, El-Sheikh Zayed, 6th October City 12588, Egypt
3Department of Engineering Sciences and Mathematics, Luleå University of Technology, SE 97187 Luleå, Sweden
4Fibre and Particle Engineering, University of Oulu, FI-90014 Oulu, Finland
Format: article
Version: published version
Access: open
Online Access: PDF Full Text (PDF, 5.4 MB)
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Language: English
Published: Multidisciplinary Digital Publishing Institute, 2019
Publish Date: 2019-09-09


Nanofibers isolated from unbleached neutral sulfite rice straw pulp were used to prepare transparent films without the need to modify the isolated rice straw nanofibers (RSNF). RSNF with loading from 1.25 to 10 wt.% were mixed with cellulose acetate (CA) solution in acetone and films were formed by casting. The films were characterized regarding their transparency and light transmittance, microstructure, mechanical properties, crystallinity, water contact angle, porosity, water vapor permeability, and thermal properties. The results showed good dispersion of RSNF in CA matrix and films with good transparency and homogeneity could be prepared at RSNF loadings of less than 5%. As shown from contact angle and atomic force microscopy (AFM) measurements, the RSNF resulted in increased hydrophilic nature and roughness of the films. No significant improvement in tensile strength and Young’s modulus was recorded as a result of adding RSNF to CA. Addition of the RSNF did not significantly affect the porosity, crystallinity and melting temperature of CA, but slightly increased its glass transition temperature.

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Series: Materials
ISSN: 1996-1944
ISSN-E: 1996-1944
ISSN-L: 1996-1944
Volume: 12
Issue: 4
Article number: 595
DOI: 10.3390/ma12040595
Type of Publication: A1 Journal article – refereed
Field of Science: 216 Materials engineering
Funding: The authors acknowledge funding of the current research by the Swedish Research Council (project No. 2015-05847), as well as the financial support received from Bio4Energy, a strategic research environment appointed by the Swedish government.
Copyright information: © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (